Forming of felts which have an isotropic structure

Details Forming of felts which have an isotropic structure Forming of felts which have an isotropic structure

1987-06-15

1989-05-02

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427365, 427366, 427369, 427370, 4273898, 428289, 428290, 428410, 428426, D04H 108

Patent

active

048267228

ABSTRACT:
The invention relates to the forming of felts, the fibres of which are disposed in random directions.
These felts are obtained by depositing the fibres which are carried by a current of gas on a gas-permeable conveyor, the fibres, prior to being deposited, being coated with a binder composition. The felt constituted on the conveyor is subject to at least a longitudinal compression, the intensity of which is regulated in such a way that no creases form on the surface.
The felts obtained are highly resistant to compression, to tearing and to flexion.

REFERENCES:
patent: 1948395 (1934-02-01), Powell
patent: 2958919 (1960-11-01), Palmer
patent: 3045316 (1962-07-01), Gilhart
patent: 3152200 (1964-10-01), Kleist
patent: 4146564 (1979-03-01), Garrick et al.
patent: 4496633 (1985-01-01), Nowobilski
patent: 4508673 (1985-04-01), Stahl et al.
patent: 4567078 (1986-01-01), Blackmore et al.

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